Damper-regulator.



No. 708,3 |9. Patented Sept. 2, I902. I

S. COATS. DAMPER REGULATOR. (Application filed News, 1901.

(No Model.)

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SAMUEL COATS, OF BRIDGEPORT, PENNSYLVANIA.

DAM PER-REG u LATO R.

SPECIFICATION forming part of Letters Fatent No. 708,319, dated September 2, 1902.

Application filed November 9,1901. Serial No. 81,718- (No model.) I

'TO (1.55 whom it may concern.-

Beit known that I, SAMUEL CoATs, a citizen of the United States, residing at Bridgeport, in the county of Montgomery, State of Pennsylvania, have invented a new and useful Improvement-in Damper-Regulators, of which the following is a specification.

My invention consists of a damper-regulator for the furnace of a steam generator or boiler, the same embodying means for operating a controller connected with the damper and relieving the same due to the primary.

action of a pressure-motor or diaphragmic device aifected by the change in the pressure or volume of steam.

It also consists of valves adapted to be section of one member of the clamping devices employed, on anenlarged scale. Fig. 4 represents a side elevation of a pair of said clamping devices and portion of the connected beam on a larger scale than that shown in Fig. 1. Fig. 5 represents a vertical section of one of the valves employed. Fig. firepresents a partial side elevation and partial vertical section of a modification.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates a base from which rises the cylinder or chamber B. Within said cylinder is the piston 0, whose stem D passes upwardly therefrom through the top of the same and has connected with it the weight E, from which extends the connection F, leading to the damper G of a furnace. H designates pipes leading from a place of supply of water to the cylinder ]3 below the piston C, and J designates pipes opposite to the same for the discharge of water from said cylinder.

Connected with the pipes H is the valve K,

and connected with the pipes J is the valve L, the stems M and N of said valves respectively being connected with the swinging .beam P, which in the present case is mounted on the cylinder B.

Q designates a rod or link, forming a connection for-the beam P with the lever B of a pressure-motor S, which latter may be of any proper construction.

The operation is as follows: Should the pressure of steam increase above what is predetermined, the lever B is raised by the action of the diaphragm of the pressure-motor S. This elevates the connection Q and with it the adjacent end of the beam P. The valve K is accordingly opened and the valve 'L closed. 1 Water now enters the pipes H and fills the chamber A and rising in the cylinder B presses against the piston O and elevates the .same, whereby owing to the connection F the damper G is accordingly closed, and thus the temperature of the furnace is lowered. This causes a reductionin the pressure of the steam, whereby the lever Blowers, and thus there is the reverse action on the valves K and Lthat is to say, the valve K is closed and the valve L is opened. As the supply ofwater to the cylinder B is out off and the water in said cylinder now permitted to discharge through the pipes J and valve L, the piston O is relieved, whereby it is permitted to lower, thus opening the damper, the effect of which on the furnace is evident. As soon as the temperature rises and the pressure of steam again increases beyond tonO to raise the same and causes the'clos ing of the damper, so that the temperature what is predetermined the pressure-motor is lowered and the pressure of steam reduced or lowered, as before. pass through elongated slots M N in the The stems M and N I beam P and are engaged with the upper and I lower walls of said beam by means of the clamps M N by which provision said stems M and N may move true in their rising and falling motions without liability to bind with said beamP,while atthe same time said clamps sist merely of the pointed ends of said stems, so as to offer no resistance to their withdrawal from the bodies or shells of the valves.

Referring to Fig. 3, the clamps consist each of jaws M which are adapted to embrace the respective part of the stem M or N which passes through the same,and a collar Mflwhich encircles said jaws, the contiguous parts of the latter and said collar being threaded and the parts made somewhat tapering, so that as the collar is rotated in the proper direction the jaws are contracted and caused to tightly clamp part of the stem therein. When the collar is rotated in the reverse direction, the jaws are released and permitted to expand, whereby they are relieved of their holding action on the stem, and thus the latter may be drawn through the u pper clamp, the beam P, the lower clamp M or N and the valveshells without obstruction.

T designates a pipe which is connected with the cylinder Band with the casing U, the latter having connections V W with the boilerX. In the casing U is a partition Y, forming the chamber U, with which the boiler connections V W are directly in communication, said partition havingafusible plug Z. When the water in the boiler is maintained at its proper level, it' is above the said fusible plug, so that the latter is covered by the water on the side next to the boiler. Should, however, the water become dangerouslylow,it will be at a point below said plug Z and the steam o-rheat within the boiler passes through the connection V, enters the chamber U, and acts on the plug Z to fuse or melt the same. This opens the partition Y and permits the steam to enter the portion U of the casing U and pass through the pipe T, so as to reach the cylinder B, where it acts upon the piston 0, thus raising the same andcausing the closing of the'damper, whereby the fire of the furnace is checked, so as to lower as quickly as possible the heating of the boiler. At the same time a whistle T which is connected with the pipe T is blown, thus sounding an alarm and causing the attention of the engineer to the condition of the boiler.

In Fig. 6' I show afloat Z'in lieu of the fusible plug Z, said float being mounted in the casing Z which is in communication with the boiler by means of the tubes V W'. On the axis of said float is the arm Z which is connected with the valve Z of a water-supply, so that as the float falls, due to low water in the boiler, the valve Z primarily closed, is opened, whereby water leading to the column B by a conveyor similar to the pipe H is turned on, when the piston (J is raised and maintained in elevation by said water, and thus the damper is closed, so as to check the fire of the boiler-furnace, as in the previous case. The'pressure-motor maybe regulated to permit the ascent of the lever R when the pressure of steam increases beyond the pre determined by means of the weight R, which is supported on said lever and adapted to slide therein, and the spring-R the latter being connected by the link R with the end of the lever opposite to the pressure-motor and adjustably secured in the present instance to the casing of the latter by the screw S.

It will be understood that the pressure-motor will be set to maintain an equable condition of the fire of the furnace; but when the pressure of steam increases or decreases said damper will either close or open, as the case may be, and thus affect the fire, as hereinbefore explained.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is v 1. In a damper-regulator, a fluid-receiving casing, a piston therein, a connection for said piston with a damper of a furnace or heating device, supply and discharge pipes connected in said casing, valves on said pipes, a pressure-motor, a horizontally-disposed swinging beam, connections for opposite portions of said beam directly, with the stems of said valves, and a connection for said motor with said beam.

2. A fluid-receiving casing, a piston therein, a connection for said piston with adamper of a furnace or heating device, fluid supply and discharge pipes connected with said casing, a valve on said pipes, and a pressuremotor in combination with a swinging beam, and a connection for said diaphragm with said beam, the stems of said valves passing loosely through and being attached to opposite portions of said beam.

3. In a damper-regulator, a fluid-receiving casing, a piston therein, supply and discharge pipes connected with said casing, and valves on said pipes in combination with a swinging beam through which loosely pass and to opposite portions of which the stems of said valves are attached, and means for operating said beam by the changes in the pressure of steam of a boiler whose furnace or heating IIO device is provided with a damper, with which said piston is connected.

4. In a damper-regulator, a fluid-receiver, supply and discharge pipes connected with said receiver, valves in said pipes, a swinging beam for operatingsaid valves, and means for clamping the stems of said valves upon opposite sides of said beam, the latter having elongated slots which the adjacent portions of said stems freely occupy.

5. In a damper-regulator, a fluid-receiving casing, a piston therein, supply and discharge pipes connected with said casing, and valves on said pipes and having stems in combination with a swinging beam to opposite portions of which the stems of said valves are attached and means for operating said beam by the changes in the pressure of steam of a boiler whose furnace or heating device is provided with a damper with which said piston is connected, in combination with a pipe connected with said casing, and a low-water-actuateddevice adapted to be connected with said boiler and with said pipe.

6. In a damper-regulator, a fluid-receiving casing, supply and discharge pipes connected with said casing, valves on said pipes and consisting of rods of substantially the same diameter throughout and having ends shaped to coact with valve-seats in valve-casings in said supply and discharge pipes, a pivoted swinging beam for reversely operating said valves and means for operating said beam by changes in the pressure of steam, in combination with means for connecting the stems of said valves with said beam consisting of elongated slots in the latter opposite sides of the pivot, jaws clamping said stems above and below said beam, and collars on said jaws for tightening the same, said stems passing freely through said jaws, collars and slots.

7. In a damper-regulator, a fluid-receiving casing, water supply and discharge pipes connected therewith, a piston in said casing having connection with a damper, a swinging beam mounted between its ends on said casing, a pressure-motor, valve-stems passed loosely through and connected with said beam upon opposite sides of its pivot with ends adapted to seats in the supply and discharge pipes, a lever connected with the motor and extending substantially parallel with the said beam, and a connection between one end of the lever and the adjacent end of the beam.

8. In a damper-regulator, a fluid-receiving casing, water supply and discharge pipes connected therewith, a piston in said casing having connection for a damper, a swinging beam pivoted between its ends, valve-stems passed loosely through and connected with said beam near its opposite ends, a pressuremotor, a lever connected with the motor and extending substantially parallel with the beam, a connection between one end of the said lever and the adjacent end of the beam,

a spring secured at one end, a link connect- SAMUEL COATS.

Witnesses:

FREAS STYER, MAZIE H. SPENCER. 

